plot a curve throughout max and min values

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Mohanned Al Gharawi 2019-3-8

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https://ww2.mathworks.cn/matlabcentral/answers/448924-plot-a-curve-throughout-max-and-min-values

评论： Mohanned Al Gharawi 2019-3-8

Hello everybody,

I have a signal as shown below, I need to plot two curves, one passes the max values of the signal and the other throughout the min values (it likes an envelope for the signal).

Thanks in advance.

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回答（1 个）

KSSV 2019-3-8

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https://ww2.mathworks.cn/matlabcentral/answers/448924-plot-a-curve-throughout-max-and-min-values#answer_364401

Read about envelope

https://in.mathworks.com/help/signal/ref/envelope.html

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Mohanned Al Gharawi 2019-3-8

I appreciate for your response, I know the envelope command, but what I need is the curve to be more smooth when passes the max and min values like the below. frequencies 2.JPG